Home / 856,198.81-1,284,720.26-400,820.92

Finding the Fourth Proportional to 856,198.81, 1,284,720.26 and 400,820.92

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Solution

The fourth proportional to 856,198.81, 1,284,720.26 and 400,820.92 is: 601,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,198.81 : 1,284,720.26 = 400,820.92 : x
  2. Step 2: Convert to fraction form
    856,198.81/1,284,720.26 = 400,820.92/x
  3. Step 3: Cross multiply
    856,198.81x = 1,284,720.26 × 400,820.92
  4. Step 4: Simplify right side
    856,198.81x = 514,942,756,555.84
  5. Step 5: Solve for x
    x = 514,942,756,555.84/856,198.81
  6. Step 6: Final answer
    x = 601,428.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.